Biodegradable, phosphate free, and odorless * Specially formulated tablets clean away oil and residue inside the fully automatic machine that can lead to bitter tasting coffee * Formulated for controlled solubility, easy rinsing, and powerful cleaning to maintain the inner workings of your machine * Can also be used on traditional espresso machines to backflush and clean filter screens * Each automatic machine requires different frequency of cleaning follow the directions as described by the manufacturer of your machine